McCaul, chairman of the Homeland Security Oversight & Investigations Subcommittee, spoke on related matters Tuesday night at Rice University’s Baker Institute, not long after he signed a letter to the DHS inspector general requesting an investigation be launched.

The letter asks:

To what extent was DHS and its components involved in the decision-making process implementing Fast and Furious?

Fast and Furious has since drawn a barrage of criticism and scrutiny, with the ATF as well as U.S. Attorney General Eric Holder, Homeland Security Secretary Janet Naplitano and others being questioned about who knew what, and when.

McCaul has made no secret that he thinks much more was going on than lawmakers, the public, and apparently even fellow federal agents have been led to believe.